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Finding the Fourth Proportional to 116.55, 175.14 and 99.25

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Solution

The fourth proportional to 116.55, 175.14 and 99.25 is: 149.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.55 : 175.14 = 99.25 : x
  2. Step 2: Convert to fraction form
    116.55/175.14 = 99.25/x
  3. Step 3: Cross multiply
    116.55x = 175.14 × 99.25
  4. Step 4: Simplify right side
    116.55x = 17,382.42
  5. Step 5: Solve for x
    x = 17,382.42/116.55
  6. Step 6: Final answer
    x = 149.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.